CN207594598U

CN207594598U - Curve tracing and measurement facility

Info

Publication number: CN207594598U
Application number: CN201720286196.4U
Authority: CN
Inventors: 万华; 满洪流
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-21
Filing date: 2017-03-21
Publication date: 2018-07-10
Anticipated expiration: 2027-03-21

Abstract

The utility model discloses a kind of curve tracing and measurement facilities, the curve tracing and measurement facility include snakelike fixed frame and curve ruler, the snakelike fixed frame includes multiple segments, the two neighboring segment connection, to adjust the curved shape of the snakelike fixed frame by rotating the multiple segment, the two sides of the curve ruler is equipped with scale, and the curve ruler is mounted on the medial surface of the snakelike fixed frame, to be fitted the curved shape of the snakelike fixed frame.

Description

Curve tracing and measurement facility

Technical field

The utility model is related to a kind of teaching drawing tool, especially curve tracings and measurement facility.

Background technology

Compasses can easily draw circle, but parabola, hyperbola, ellipse can not be drawn, junior-senior high school mathematics class Journey is related to the mapping problem of a large amount of parabolas, hyperbola, ellipse and other curves, but does not have a kind of work on domestic and international market at present Tool simply prompt can rapidly draw these figures.Student and teacher only have these curves of freehand, both unsightly or have been not allowed Really.Existing indivedual curve tracing utility model tools also mainly according to the definition of curve, are mapped with the filament tightened, operation It is not only inconvenient but also not quick to get up.The length of straight line can be measured with ruler, but length of a curve never has measurement facility, often When student asks length of a curve problem, teacher can not answer.

Utility model content

The utility model provides a kind of curve tracing and measurement facility, can conveniently and efficiently draw parabola, hyperbola, Oval, round and other curves solve the problems, such as that middle school student and teacher's trace figure do not have tool, can also measure the length of curve Degree, it has the function of ruler again.The mapping of straight line and curve can be completed with it.

The utility model solves technical solution used by its technical problem：A kind of curve tracing and measurement facility, it is described Curve tracing and measurement facility include：

Snakelike fixed frame, the snakelike fixed frame include multiple segments, the two neighboring segment connection, to pass through rotation The multiple segment adjusts the curved shape of the snakelike fixed frame；

Curve ruler, the two sides of the curve ruler are equipped with scale, and the curve ruler is mounted on the snakelike fixed frame Medial surface, to be fitted the curved shape of the snakelike fixed frame.

Preferably, the material of the curve ruler is plastics.

Preferably, multiple small sircle holes are offered on the curve ruler, is made so that a small sircle hole can be inserted by one-pen For fulcrum, another penholder is drawn after entering another small sircle hole around the fulcrum.

The utility model has following advantageous effect：The utility model makes curve tracing simpler, and cost is cheaper, takes Band is convenient, suitable for teacher on blackboard trace figure.To student's study and understand that parabola (quadratic function), hyperbola are (anti- Proportion function), oval, round and other curves be very helpful, enhance the perceptual knowledge of these knowledge, be suitble to both at home and abroad just High school student and teacher make curve graph.

Description of the drawings

Fig. 1 is curve tracing state, is serpentine curve mapping and the structure diagram of measurement facility.

Fig. 2 is curve ruler.It is the stainless steel double-sided graduated scale that bar shaped ultra-thin elastic stainless steel substrates are made or bending Sided scale ruler made of the good plastics of property.

In Fig. 1：1. snakelike fixed frame, snakelike fixed frame has several sections, save the rotational angle between section can fix or It is 180 degree or some obtuse angle, is divided into several grades, positioning device is provided in section, can blocks when they break a certain shelves Firmly, it firmly breaks and can disengage, snap into another shelves, shape that in this way can be stationary curved, 2. curve rulers.

In Fig. 2 curve rulers：3. scale, 4. small sircle holes.

Specific embodiment

Figure one is mapping state, and snakelike fixed frame 1 is bent to required shape by when mapping first, secondly curve ruler 2 are fitted, then draw curve along the inside of curve ruler 2 with snakelike fixed frame 1.

The utility model provides a kind of curve tracing and measurement facility, and the curve tracing and measurement facility include snakelike fixation Frame 1 and curve ruler 2, snakelike fixed frame 1 include multiple segments, the two neighboring segment connection, with by described in rotation Multiple segments adjust the curved shape of the snakelike fixed frame 1；The two sides of curve ruler 2 described in curve ruler 2 is equipped with scale 3, the curve ruler 2 is mounted on the medial surface of the snakelike fixed frame, to be fitted the curved shape of the snakelike fixed frame 1.

Preferably, the material of the curve ruler 2 is plastics.

Preferably, multiple small sircle holes 4 are offered on the curve ruler 2, a small sircle hole 4 can be inserted by one-pen As fulcrum, another penholder is drawn after entering another small sircle hole 4 around the fulcrum.

Claims

1. a kind of curve tracing and measurement facility, which is characterized in that including：

Snakelike fixed frame, the snakelike fixed frame include multiple segments, the two neighboring segment connection, with by described in rotation Multiple segments adjust the curved shape of the snakelike fixed frame；

Curve ruler, the two sides of the curve ruler are equipped with scale, and the curve ruler is mounted on the interior of the snakelike fixed frame Side, to be fitted the curved shape of the snakelike fixed frame.

2. curve tracing as described in claim 1 and measurement facility, which is characterized in that the material of the curve ruler is modeling Material.

3. curve tracing as described in claim 1 and measurement facility, which is characterized in that offered on the curve ruler multiple Small sircle hole, can be inserted into a small sircle hole as fulcrum by one-pen, another penholder enters after another small sircle hole around the branch Point is drawn.